George w



. 2 Sheets-Sheet 1. G. W. STOW. PLOW,

(No Model.)

N0. 505,732. Patented Sept. 26, 1893.

(No Model.) 2 Sheets-Sheet 2.

G. W. STOW.

PLOW. y No. 505,732. Patented- Se'pt. y26, 1893.

UNITED STATES PATENT OFFICE.

GEORGE W. STOVV, OE BINGHAMTON, NEW YORK.

PLOW.

SPECIFIQATION forming part of Letters Patent No. 505,732, dated September 26, 1893.

Application tiled April 4, 1893. Serial No. 469,018. (No model.)

.To all whom t may concern,.-

Be it known that I, GEORGE W. STOW, a citizen of the United States, residing at Binghamton, in the county of Broome and State of New York, have invented certain new and useful Improvements in Plows; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part ofthis specification.

The object of my invention is to produce an automatic reversible plow which will be lighter, more simple in construction and easier to handle than anything of the kind heretofore known or used.

To accomplish this purpose I employ a reversible mold-board of peculiar construction, carrying plow-points on its opposite ends together with certain reversing gear and locking and unlocking mechanism, all of which will be fully describedhereinafter and pointed out in the claims.

In the accompanying drawings: Figure l represents a side elevation of my complete invention; Fig. 2 a rear view showing the relative positions of the 1nold-board, the standard to which it is attached, and the plowpoints, when the beam is turned at right angles to the standard, or half way round; Fig. 3 a rear view of the plow; Fig. 4 a transverse section through X-X of Fig. 2; Fig. 5 a detail top View of the mold-board and the points iixed thereto.

The reference letter @represents the standard which is by preference made of a single casting and as light as consistent with strength. The bottom of the standard is provided with a shoe a which is beveled at a2. On one side of this standard is pivoted a single mold-board h, having rigidly fastened to its opposite ends, the plow-points c, thus making one mold-board serve for both points, which eects a great saving of material and labor in the construction of the plow. This mold-board is so formed as to have the same action or effect upon the ground that the moldboard of an ordinary plow does. No matter which end of the board is thrown into use, it

tion to the standard and plow-beams and at an inclination of about forty-live degrees to a vertical line. It is mounted to oscillate in bearings c, e', extending laterally from the standard, and its lower end is fixed within a recessor socket f on the under side and Vcentral portion ofthe board, and its upper end is provided with a toothed segment d which meshes with a toothed segment d on the lower end of a vertical bolt g, mounted in an overhanfrinor ortion a3 of the standard and forming the pivot for the plow beam. The upper end of this vertical bolt is squared, and passes through a square aperture in the plow beam. The top of the bolt is provided with a nut. l The lower end passes through the portion a3 and revolves within bearing 61,4 cast integral with the standard. By this means the bolt is fixed to the beam to oscillate the mold-board by the action of the beam, and to reverse the mold-board and its points as will be better explained hereinafter.

By providing the top of the standard with an overhanging portion or oE-set a3, the plowbeam and hence the handles are thrown more nearly over the center of the furrow, which allows the plowman to walk within the furrow instead of on the side. The under side of the mold-board is provided with a supporting bracket h through which the pivot d passes. This bracket aids in supporting and steadying the mold-board.

The locking and releasing mechanism consists in a hand-lever 7c at the top of the standard, and a horizontal spring-actuated bolt m at the lower portion. The bottom portion of the plow-beam which lies directly over the standard, is provided with a metal plate n, in the forward end of which is pivoted the lever 7o.

The plate is provided with a lip o which overlaps a ledge p on the front of the top of the standard, and the lever is provided with a lug q near its pivot la', so that when the standard passes around in alignmentwith the beam, and the ledge passes over the lip o,

the lug will, when the lever is depressed, drop down and lock the standard in position for plowing. v

The locking bolt m at the lower part of the standard, serves to lock the mold-board and its plow-points down against oscillatory move-y ment, and to relieve the gears from strain.

The under side of the mold-board is provided with a keeper r, which is automatically engaged by the beveled end ot' the bolt when the board descends into operative position. The bolt moves in three guide-lugs s, s', s. Two collars m are placed on the bolt, and coil springs are interposed between them and the central lug s so that the bolt will be automatically advanced in opposite directions. A similar keeper r is placed on the opposite end of the mold-board and is engaged by the opposite end of the bolt in the same manner the other is.

Two foot-levers t, t are pivoted below and engage the bolts near their ends at a point convenient to the plowman, so that by tread ing on the arm of one ot' the levers, the opposite end of the bolt is withdrawn from its keeper and the board liberated for reversal.

Having thus set forth the preferred construction of myinvention, I will now proceed to describe its operation. mold-board and its plow-points, the operator simply lifts the hand-lever 7c until the lug c thereon clears the standard, and he also withdraws the bolt fm with his foot.

standard, is reversed. In so doing, the bolt g makes half a revolution which is communii cated to the pivot d of the board through the medium of the beveled gears d', d, and causes f the rear or elevated point to descend and as- To reverse the` The beam is then turned to the right or left as the case may be, until its position in relation to the will have automatically engaged the keeper l. In a reversible plow, the combination of a body-portion or standard a revoluble plowbeam mounted on the standard, a vertically extending bolt journaled revolubly in the standard and positively connected at its upper end to the plow-beam, a double moldboard pivotally mounted on the standard and geared with the 'vertically extending bolt, whereby upon revolving the plow-beam the disposition of the mold-board will be changed, a longitudinally-movable spring-pressed bar arranged horizontally on the standard and having beveled ends, eyes or keepers formed on the under side of the mold-board and adapted to alternately receive the beveled ends of the horizontal bar and thereby lock the moldboard in position, and a foot-lever fulcrumed to the standard and having one arm connected to the bar whereby the bar may be retracted to disengage the keeper and release the moldboard, substantially as described.

2. In a reversible plow, the combination of a standard, a reversible double mold-board pivoted thereto, a longitudinally movable spring-pressed bar arranged horizontally on the standard, eyes or keepers on the rnoldboard adapted to receive alternately the ends of the horizontal bar whereby the mold-board is locked in position, and a foot-lever fulcrumed to the standard and having one arm connected to the bar whereby the said bar may be retracted to disengage the eye or keeper and thus release the mold-board, substantially as described. In testimony whereof I atX my signature in presence of two witnesses.

GEORGE W. STOW. Witnesses:

R. G. DUBOIS, D. F. GRAY. 

